Group JYJ's member Jaejoong joined the ice bucket challenge.

On August 20, Jaejoong posted on his Twitter, "ALS campaign. Thank you Illy for making me do something good. The people that I now challenge are actors Hwang Jung Eum, Kim Kyuri, and Choi Tae Joon" along with a video.

In the videom Jaejoong was wearing a sleeveless top and was kneeling as someone poured a bucket of ice water on him.

Internet users who saw this commented, "Wow," "You're so awesome," etc.

The ice bucket challenge is a campaign hosted by the ALS association to raise funds to find a cure for the Lou Gehrig's Disease.